A few years ago, my New Year's Resolution was to floss every day. And I did; I was very proud of myself. After a few weeks, I already did it more or less automatically.
I always did it very quickly, though, and I wondered if I was being too cursory. So when I went to get my teeth cleaned again in the early summer, I was eager to hear what the dental hygienist said. If she had given me the "you-need-to-floss" speech again, then I would have quit flossing in frustration! But she didn't, she praised me and said it made a world of difference, upon which I admitted that I felt like I was doing a cursory job, but I was glad that that was better than nothing.
The moral of the story: A cursory effort is better than no effort at all!